Schematron validation

<s:schemaxmlns:s="http://purl.oclc.org/dsdl/schematron"><s:pattern><s:rulecontext="/"><s:asserttest="result">The document root is not result.</s:assert><s:asserttest="result/text()='This is a test with ä ö ü.'">The string is not decoded correctly.</s:assert></s:rule></s:pattern></s:schema>